After lecturing commercial law part-time at Rhodes University, Thomas successfully completed his pupillage and is currently a member of the Eastern Cape Society of Advocates.

Born in Johannesburg, Thomas moved to Belgium, where he attended the British School of Brussels. He completed his secondary education at the King's School Canterbury in the United Kingdom with A-Levels in Politics, Economics and French. Thereafter followed an undergraduate degree in Economics and Business with Eastern European studies at University College London. Thomas returned to South Africa and completed an LLB degree at Rhodes University.